Turbine-driven locomotive



F. LJUNGSTRUM. TURBINE DRIVEN LOCOMOTIVE.

APPLICATION FILED OCT-19.1921.

Patented July 11, 1922.

III

FREDRIK IJUNGSTRQM, OF BREVIK, LIDINGON, SWEDEN, ASSIGNOR TO AKTIE-BOLAGET IJUNGSTROMS ANGTURBIN, OF STOCKHOL'M, SWEDEN, A CORPORA- TION.

TURBINE-DRIVEN LOCOMOTIVE.

Application filed October 19, 1921.

T 0 all whom it may concern Be it known that I, FREDRIK LJUNGSTROM,Chief Engineer, subject of the King of Sweden, residing at Brevik,Lidingon, Sweden, have invented certain new and useful Improvements inTurbine-Driven Locomotives, of which the following is a specification.

In locomotives in which the driving wheels are driven by means ofturbines by the a1d of crank and connecting rod, for instance withassistance of toothed gearings, and provided with a boiler carriage anda condenser placed on a separate carriage 1t has been proposed to placeaggregates of toothed gearings connected w1th the turblne on thecondenser carriage. In the case of large locomotives it has proveddifficult to place within the limited space a system of toothed gearingstogether with a turbine producing the whole amount of power of thelocomotive.

This invention relates to an arrangement in locomotives of thefirst-named type and its object is to dispose the turbine systems andthe corresponding driving devlces in such manner that locomotives ofconsiderably greater efficiency than has hitherto been the case may bemanufactured. The invention consists chiefly in that one or more h ghpressure turbine systems and corresponding driving devices, for instancetoothed gearings, are mounted on the boiler carriage and one or more lowpressure turbine systems and corresponding driving devices, for mstancetoothed gearings, on the condenser carriage. By this the advantage isobtalned that the necessary flexible steam conduit connection betweenthe two carriages may be placed in a steam pipe of smaller d1- ameterthan is the case, if two turbine systems independent of each other bemounted on either carriage, since in this case the said connection hasto be placed in an outlet conduit from a turbine to the condenser, thisconduit being necessarily of considerably greater diameter. O

In the accompanying drawmg Flgures 1 and 2 illustrate differentembodiments of the invention.

Referring to the drawing, the boiler carriage is indicated by 1 and thecondenser carriage by 2. In the embodiment shown in Fig. 1 there ismounted a toothed gear system together with the turbine on eitherSpecification of Letters Patent.

Patented July 11, 1922.

Serial No. 508,896.

carriage, the whole high pressure system being collocated at a place inthe boiler carriage and the whole low pressure system at a place in thecondenser carriage. The high pressure turbine system is indicated by 3and the low pressure turbine system by 4. The waste steam from theturbine system 3 is conducted to the turbine system 4 from one carriageto the other, and in the steam conduit between the systems a joint orflexible connection 5 is arranged. The waste steam from the turbinesystem 4 is conducted directly to the water tank of the condenser. Eachturbine is connected with a toothed gearing transmitting power to thedriving wheels by means of crank and connecting rod. Said turbinesystems with toothed gearings may also be mounted at any other place onthe carriages, as for instance on the foremost part of the boilercarriage and the rearmost part of the condenser carriage. It is howevermore advantageous to place the systems in such manner that the shortestpossible steam conduits are obtained.

Accordinggto the embodiment shown in Fig. 2, two turbine systemstogether with toothed gearings are disposed on either carriage andplaced at'each end of the. carriage. Also in this case the systemsplaced on the boiler carriage consist of high pressure turbines and thesystems on the condenser carriage of low pressure turbines. As willappear from Fig. 2, the waste steam is conducted from the system 6 onthe foremost part of the boiler carriage to the system 7 on the rearmostpart of the same carriage and then to the system 8 on the foremost partof the condenser carriage. The steam is then conducted to the system 9on the rearmost part of the condenser carriage and finally to the watertank of the condenser carriage 2. The steam conduit between the twocarriages is also in this case provided with a flexible connection 5.The turbines may also be disposed in other manner provided the wastesteam from the turbines of the boiler carriage be not conducted directlyto the condenser, since in this case an outlet conduit with a diametertoo great to make a suitable arrangement of a flexible connectionpossible will be neces-, sary. The toothed gear systems with turbinesmay be disposed on bogies or on rigid frames. The system 6 is altogetherplaced on a bogie, and owing thereto the steam con duits to the same areto be made flexible, for instance by the aid of long pipes. The system 9is altogether placed on the condenser receptacle or the carriage frame,and therefore the driving device is arranged in a manner known from theconstruction in which the machine is disposed on the frame and thedriving device on a bogie. The driving device on the rearmost part ofthe boiler carriage is preferably disposed below the coal bunker 1Oplaced .on the boiler carriage. I

What I claim as new and desire to secure by Letters Patent of the UnitedStates is 1. In locomotives in which the driving wheels are actuated byturbines with the assistance of toothed gearings, and provided. with aboiler carriage and a condenser placed on a separate carria e,thearrangement that one or more big pressure turbine systems with drivingdevices are disposed on the boiler carriage and one or more low pressureturbine systems with driving devices are disposed on the condensercarriage.

2 An arrangement according to claim 1, characterized by a-high ressureturbine system with a driving device consisting of toothed gearing,being disposed on the rear part of the boiler carriage and a lowpressure turbine system with a driving device consisting oftoothedgearing, on the fore part of they condenser carriage.

3. An arrangement accordlng to claim 1,

characterized by a turbine system with driving device, consisting oftoothed gearing, being disposed at either end of both carriages.

4. An arrangement according to claim 1, characterized by a turbinesystem with driving device, consisting of toothed gearing, beingdisposed at either end of both carriages on bogies.

5 In locomotives in which the driving wheels are actuated by means ofcrank and connecting. rods with the assistance of toothed gearings, andprovided with a boiler carriage and a condenser placed on a sepa ratecarriage, the arrangement that one or more high pressure turbine systemswith driving devices are disposed on the boiler carriage and one or morelow pressure turbine systems with driving devices are disposed on thecondenser carriage.

6. In locomotives in which the driving wheels are actuated by means ofcrank and connecting rods with the assistance of toothed gearings, thearrangement of a hi h pressure turbine system with a drivin eviceconsisting of toothed earings, ing disposed on the rear part 0 theboiler carriage and-a low pressure turbine system with a drivin deviceconsisting of toothed gearings, on 518 fore part of the condensercarriage.

In testimony whereof I aflix my signature in presence of two witnesses.

FREDRIK LJUNGSTROM.

Witnesses:

SNEZ LOEBSON, ERN Helen.

